Leonardo DiCaprio has very strict dating criteria.

He dates models, preferably with Victoria’s Secret wings, or actresses who are under 25 years old.

Even if they are around long enough to make it to their mid-20s, the relationship doesn’t last.

Behold:

As we can see, as Leo's age goes up, the age of his girlfriend hovers in the early twenties.

The last time the Great Gatsby star dated someone even close to his own age was back in 2005, when he and model Gisele Bundchen ended their five-year relationship. At the time he was 29 (turning 30) and she was 24.

His current relationship with model Camila Morrone has a 22-year age gap. He's 44 and she's 22.

Morrone, whose stepfather is actor Al Pacino, first met Leo when she was just 11 years old.

While Leo's dating history is well-known, he's far from the only actor dating women half his age. This is a common thing - so common we've dubbed it the 'Leo Effect' - and lots of other men are taking part.

Henry Cavill.

In 2014-2015, Superman actor Henry Cavill dated 21-year-old Marisa Gonzalo.

Then in 2015-2016 he dated British student Tara King who was 13 years younger than him. She was 17 when they met and 19 when they broke up.

Jake Gyllenhaal.

In 2010 Jake Gyllenhaal famously dated Taylor Swift (Maple latte, anyone?). He was 29, she was 20.

In 2013, he was linked to Victoria's Secret model Emily Didonato, 10 years his junior.

Drake.

 

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In 2018, rapper Drake, 32, was linked to American model Bella Harris.

As the rumours began, Bella was 18 and had only just graduated from high school. At 13 years his junior, she and Drake had reportedly known each other since she was 16.

He has also copped flak for his friendship with Stranger Things actress Millie Bobby Brown in late 2018.

"We just texted each other the other day, and he was like, ‘I miss you so much,’ and I was like, ‘I miss you more,'" Millie, who was 14 at the time, said on a red carpet.

She said the two also "text about boys".

Paul Walker.

When Paul Walker died in a car crash in 2013, he was dating 23-year-old Jasmine Pilchard-Gosnell. The pair started dating when he was 33 and she was 16.

Paul had previously been in a relationship with Aubrianna Atwell, who was also 16 when they met. He was 28 at the time.

Wilmer Valderrama.

 

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Fez from That 70s Show dated Mandy Moore in 2001-2001 when she was 16 and he was 20.

At age 24, Wilmer dated 17-year-old Lindsay Lohan, but they kept their relationship private until her 18th birthday.

In 2010, 30-year-old Wilmer began dating 17-year-old Demi Lovato. They were together on-and-off for six years.

And these are only the recent examples.

In 1972, as a 14-year-old, Lori Mattix claimed she lost her virginity to David Bowie. That same year she began a relationship with Led Zeppelin guitarist Jimmy Page, who was in his late 20s.

Marvin Gaye was 32 when he recorded his hit Let's Get It On, about 17-year-old Janus Hunter.

In 1973, 16-year-old Julia Holcomb's mother signed over legal guardianship of her to Aerosmith's Steven Tyler, then 27, so she could travel over state lines when he was on tour.

While an older man being attracted to a younger woman is a cliche as old as time, and women can date whoever they please, when there's a genuine pattern of these much older men looking to date young women, and in some cases teenagers, that should raise eyebrows.